ref: 9ca327dd06c30341d984bff84727ea451b428db7
dir: /os/manga/flashif.h/
typedef struct Flash Flash; /* * structure defining a flash memory card */ struct Flash { QLock; /* interlock on flash operations */ Flash* next; /* the following are filled in by devflash before Flash.reset called */ char* name; void* addr; ulong size; void * archdata; int (*reset)(Flash*); /* the following are filled in by the reset routine */ int (*eraseall)(Flash*); int (*erasezone)(Flash*, int); int (*read)(Flash*, ulong, void*, long); /* reads of correct width and alignment */ int (*write)(Flash*, ulong, void*, long); /* writes of correct width and alignment */ int (*suspend)(Flash*); int (*resume)(Flash*); int (*attach)(Flash*); uchar id; /* flash manufacturer ID */ uchar devid; /* flash device ID */ int width; /* bytes per flash line */ int erasesize; /* size of erasable unit (accounting for width) */ void* data; /* flash type routines' private storage, or nil */ ulong unusable; /* bit mask of unusable sections */ }; /* * called by link routine of driver for specific flash type: arguments are * conventional name for card type/model, and card driver's reset routine. */ void addflashcard(char*, int (*)(Flash*)); /* * called by devflash.c:/^flashreset; if flash exists, * sets type, address, and size in bytes of flash * and returns 0; returns -1 if flash doesn't exist */ int archflashreset(int instance, char*, int, void**, long*, void **archdata); int archflash12v(int); void archflashwp(void *archdata, int); /* * Architecture specific routines for managing nand devices */ /* * do any device spcific initialisation */ void archnand_init(void *archdata); /* * if claim is 1, claim device exclusively, and enable it (power it up) * if claim is 0, release, and disable it (power it down) * claiming may be as simple as a qlock per device */ void archnand_claim(void *archdata, int claim); /* * set command latch enable (CLE) and address latch enable (ALE) * appropriately */ void archnand_setCLEandALE(void *archdata, int cle, int ale); /* * write a sequence of bytes to the device */ void archnand_write(void *archdata, void *buf, int len); /* * read a sequence of bytes from the device * if buf is 0, throw away the data */ void archnand_read(void *archdata, void *buf, int len);